Show commands for MSTP

IMPORTANT:

Before running the show commands, make sure that you have enabled STP synchronization between VSX peer switches. See Enabling VSX synchronization of STP configurations between VSX peer switches.

Task

Action

Verify that all switches are in the same MSTP region with the instance mapping to VLAN.

Enter the show spanning-tree mst-config command.

View the latest topology changes of the VSX peer.

  1. Synchronize the time by entering the NTP (vsx-sync time) command.

  2. Enter the show spanning-tree mst <0-64> vsx-peer command.

Verify that the following global parameters are the same on VSX switches:

  • STP mode

  • STP region configuration for MSTP (config-name and config-revision)

  • STP instance to VLAN mapping

  • STP instance priority

  1. Enter the show running-config spanning-tree command.

  2. Enter the show running-config spanning-tree vsx-peer command.